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Problem with mask's fitting to tubing?
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Dyssomniac Offline

Members

Posts: 19
Joined: Dec 2014

Machine: System One REMStar 60 Series Auto CPAP
Mask Type: Full face mask
Mask Make & Model: AirFit F10
Humidifier: System One Heated Humidifier
CPAP Pressure: 4-20 cm
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #1
Problem with mask's fitting to tubing?
This morning shortly before I got up, I became aware of a kind of flopping sound coming from the L-fitting that connects my Airfit F10 mask to the tubing from the machine. I soon got up and didn't think about it right away.

Then this evening when I first turned the machine on, the flopping sound was back and very pronounced. (Amplified by the airspace in the tubing, the sound is quite loud, and would keep me up, and probably my wife as well.) I see kind of a rubberized flap inside the L-fitting that I gather is designed to direct exhaled air out a vent hole, and I can only think that it's this flap that's not working correctly.

I tried washing and drying the L-fitting, but this didn't improve it. I then noticed that I had an identical L-fitting from a previous mask I'd tried, and I swapped this in to see if it would help. Unfortunately, the sound persisted. (This seemed odd to me that two of the L-fittings would fail in the same way at the same time.) I also tried swapping masks, but the problem remained. The only thing I didn't swap out was the hose, but it's hard to see how this would cause the problem.

Has anyone encountered this? Is there an easy fix? I can call the DME supplier in the morning and see how soon I can get them to send me a new one, but I may be CPAP-less for the time being unless I can figure out a way to fix it.
(This post was last modified: 01-23-2015 01:55 AM by Dyssomniac.)
01-23-2015 01:52 AM
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surferdude2 Offline

Advisory Members

Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #2
RE: Problem with mask's fitting to tubing?
That sounds like you may not be getting enough pressure (or possibly intermittent pressure) from your flow generator to hold the emergency expiration valve closed. I suspect the reason may be you have started using the humidifier recently. That valve should never be "flapping" except when you shut the flow generator down while using the humidifier and it goes into the cool down mode and you exhale into the mask. During that time, the flow is reduced and will give the symptoms you describe. It's the life saver feature that keeps you from suffocating when the machine goes down while you're asleep. Test it without the humidifier attached or activated.
(This post was last modified: 01-23-2015 09:27 AM by surferdude2.)
01-23-2015 09:21 AM
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Dyssomniac Offline

Members

Posts: 19
Joined: Dec 2014

Machine: System One REMStar 60 Series Auto CPAP
Mask Type: Full face mask
Mask Make & Model: AirFit F10
Humidifier: System One Heated Humidifier
CPAP Pressure: 4-20 cm
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #3
RE: Problem with mask's fitting to tubing?
Thanks. The night before this problem first cropped up, I had put the machine into manual humidification mode, and it went through a fair amount of water during the night. However, before the next time I used the machine I'd put it back into auto humidification mode, the same configuration I'd been using for 2-3 months.

I'll try it without the humidifier, but I'm not clear on the relationship here. How exactly is it that using the humidifier can cause the air pressure to decrease?
01-23-2015 09:57 AM
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surferdude2 Offline

Advisory Members

Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #4
RE: Problem with mask's fitting to tubing?
To explain: The reduced air flow at certain stages when using the humidifier is so that when you turn the machine off the water vapor will not flow back into the flow generator where it could cause damage. That flow will continue for enough time to allow the water temperature to fall below the high vaporization point. That flow will also be there at the initial warm up stage in order to stop the warming up water from wetting the interior of the flow generator. That's by design and not a problem. It all takes place before and after your sleep session and you will not usually be expected to have the mask on at those times.
(This post was last modified: 01-23-2015 10:11 AM by surferdude2.)
01-23-2015 10:06 AM
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justMongo Offline

Monitors

Posts: 3,857
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #5
RE: Problem with mask's fitting to tubing?
I use the same mask as Surferdude2. The only time that safety valve flaps is the few seconds between the time I strap in until I turn on the machine. Your valve hasn't fail. Your machine's blower is not working.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
01-23-2015 11:25 AM
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retired_guy Offline

Preferred Members-2

Posts: 2,744
Joined: Jan 2014

Machine: ResMed S9 Autoset
Mask Type: Nasal pillows
Mask Make & Model: Resmed Airfit P10
Humidifier: ResMed
CPAP Pressure: 10.6/14, EPR 3
CPAP Software: ResScan SleepyHead

Other Comments: Is it bedtime yet?

Sex: Male
Location: Beautiful, albeit very wet Oregon Coast

Post: #6
RE: Problem with mask's fitting to tubing?
I see on your sidebar you're using the 4 and 20 blackbird settings for minimum and maximum pressure. That's usually a bad idea and we can discuss it further if you wish, but for openers try increasing the bottom end to at least 6 and see if the blackbirds stop flapping their wings.
01-23-2015 12:29 PM
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Dyssomniac Offline

Members

Posts: 19
Joined: Dec 2014

Machine: System One REMStar 60 Series Auto CPAP
Mask Type: Full face mask
Mask Make & Model: AirFit F10
Humidifier: System One Heated Humidifier
CPAP Pressure: 4-20 cm
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #7
RE: Problem with mask's fitting to tubing?
Thanks for the suggestions. I'll check it out further, including the possibility of upping the minimum pressure.

I did try just turning the machine on for a couple of minutes during the daytime this morning, and it was no longer "flapping." The inhalation part of the breathing cycle seemed normal, but when I exhaled it felt as though I had to push against more pressure than I remember being normal. (This was without making any adjustments -- for example, no change to the 4-20 cm pressure range.) Does this suggest anything else I ought to check out?
(This post was last modified: 01-23-2015 02:32 PM by Dyssomniac.)
01-23-2015 02:31 PM
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justMongo Offline

Monitors

Posts: 3,857
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #8
RE: Problem with mask's fitting to tubing?
There might be an Expiratory relief setting that lowers pressure during exhale.
Some like the feature -- others don't
It's called EPR by ResMed and something else by Phillips-Respironics.
We need a P-R person to answer that one.

Thing is, these settings don't change by themselves.
So, there may be an issue with your machine; or, perhaps you are just getting accustomed to it.

Retired Guys increase in the min pressure number is sound. At 4, many people feel like they are not getting enough air.
Also, the machine starts a long ways from therapeutic pressure.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
01-23-2015 02:48 PM
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Dyssomniac Offline

Members

Posts: 19
Joined: Dec 2014

Machine: System One REMStar 60 Series Auto CPAP
Mask Type: Full face mask
Mask Make & Model: AirFit F10
Humidifier: System One Heated Humidifier
CPAP Pressure: 4-20 cm
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #9
RE: Problem with mask's fitting to tubing?
Okay, thanks, I'll look into it. I don't know that there's necessarily anything wrong with the machine. As noted, the flapping issue started after I changed the humidification mode, and the machine moved a lot of water through it the night when the flapping first started close to waking time. I've since changed that back to the default. Also, our air has been very dry, and I've been having sinus and nasal issues of various kinds. This makes it difficult to tell when an issue is related to the CPAP hardware or just reflects issues with my airway.
01-23-2015 03:14 PM
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Terry Offline

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Posts: 553
Joined: May 2014

Machine: Philips Respironics RemStar Auto with A-Flex (560P)
Mask Type: Nasal pillows
Mask Make & Model: P/R Nuance & Pap Cap
Humidifier: Integrated
CPAP Pressure: Auto
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #10
RE: Problem with mask's fitting to tubing?
(01-23-2015 03:14 PM)Dyssomniac Wrote:  Okay, thanks, I'll look into it. I don't know that there's necessarily anything wrong with the machine. As noted, the flapping issue started after I changed the humidification mode, and the machine moved a lot of water through it the night when the flapping first started close to waking time. I've since changed that back to the default. Also, our air has been very dry, and I've been having sinus and nasal issues of various kinds. This makes it difficult to tell when an issue is related to the CPAP hardware or just reflects issues with my airway.

If you're using the heated tube, do you have the correct power supply?

The heated tube requires the 80 watt power supply. This should be stamped on the bottom of the power supply.

Terry
01-23-2015 04:16 PM
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